In addition to the
reliability and effectiveness of this powered ventilation concept, the
use of HS PRVs to vent heat and smokes has these specific advantages:
* It is not dependent on air temperature differential or wind direction
and velocity to create air movement.
* It does not rely on heat itself to activate the system. Smoke
detectros and water-flow devices also may be utilized.
* It provides for normal ventilation needs of the building as well as
for emergency use as a vital component of the fire protection system.
* There is ususally a substantial cost saving in the purchase and
installation of the dual purpose system.
* Maintenance cost for building and equipment is frequently reduced.
* The system can be effectively used in multi storied and below grade
building areas.
* Reliability of operations is assured because powered ventilators are
in daily use and receive regular inspection and maintenance.